Using Roofing Tar For Undercoating

Problem with roofing tar is the metal continues to rust. The coating itself is a tar like substance that sticks to the undercarriage components and acts as a barrier to resist salt moisture oxygen and other items that lead to corrosion. Consider leaving your container of roofing tar in direct sunlight for about an hour.

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Use the broom to clean your roof before applying tar roofing.

Using roofing tar for undercoating.

When there is no debris left you are ready to apply tar to the roof. The sunlight will thin the tar and make it easier to apply. Undercoating spray can be purchased as a diy product but it s tricky to apply so it s best to use this method at the dealership on a new vehicle. Roofing tar takes a lot of heat to put on slops on with a mop gets soft in the summer and can crack in the winter.

I ve got photos attached of my gold award winning undercarriage on our 69 mach1. Using small amounts at a time apply the roofing tar with your roller in short and smooth strokes. Then the roofing tar will fall out. You mix the black roofing cement asphalt with mineral spirits to get a brushable consistency and just brush around all the areas on the undercarriage that ford originally brushed it on.

Use por 15 and fiberglass for a permanent fix. Probably not a good idea. Start in the corner furthest from your ladder. You can use a black roofing tar cement asphalt in a gallon container.

The stuff is fine for the top of a flat roof but probably terrible for the bottom of a car. It s a true temp fix as eventually the entire metal under the patch will rust away. And can you imagine how hard it would be to take off in a few years. Rubber coat 57 roof tar.